Perforating machine



Aug. 23, 1932. c w CRUMR|NE 1,873,554

PERFORA'IING MACHINE Filed Sept. 11. 1930 Gar? Fla]

- INVENTOR Chester- WCramrr/ze 7zz's ATTORNEY Patented 1 Aug. 23, 1-932UNITED STATES PATENT. orFma CHESTER W. CRUMRINE, OF ROCHESTER, NEW YORK,ASSIGHOR '20 WIAFIIO TYPEWRITERS, INCL, OF ROCHESTER, NEW YORK, ACORPORATION NEW You PERFORMING MAUHINE Application filed September 11,1980. .Serial No. 481,214.

This invention relates to improvements in perforating machines, andespecially to machines of this kind which are employed for perforatingmaster sheets used for controlling the operation of typewriting machinesor other machines controlled by means of a master sheet of this kind.

In the operation of typewriting machines by master sheets in whlchextreme rapidity m is desirable, when two adjacent type bars areoperated in rapid succession, it frequently happens that the second typebar moves into the path of the first before the latter has ,returnedfrom its printing position. When this happens, the second type barstrikes the first and cannot reach the printing position. When the typebars are more wldely separated from each other, the angle between themat the printing point is wider and their zo paths overlap each other fora shorter distance so that a return movement of the first through only ashort distance is necessary to withdraw it from the path of the second.The successive perforations in master control sheets for such machinesare usually as close together as possible so that when adjacent typebars are to beoperated by such sheets, the second frequently fails toprint.

It is the object of this invention to provide a perforating machine onwhich the master sheet is made with simple and inexpensive meansforpreventing the formation of a second adjacent perforation until afterthe sheet has been advanced a second space, thus providing a wider spacedistance between the adjacent perforations corresponding to a longertime interval between the successive actuations of the adjacent typebars in the machine in which the sheet is to be used.

Another object of the invention is to provide a perforating machine ofthis kind with means for locking the adjacent keys against operationwhen a key is actuated, said locking means being automatically releasedwhen a space key or other non-adjacent key is actuated.

To these and other ends, the invention consists in the construction andarrangement of parts that will appear from the following descriptionwhen read in con'unction with the accompanying drawing, t e novelfeatures being pointed out in the claims at the end of thespecification.

In the drawing:

Fig. 1 is a transverse section of a rforating machine illustrating oneembo ent of th% lnventiolg 1 I 'ig. 2 is a a enta an view of a ortion cfthe ke 'bfird Or in; same; p

Fig. 3 is a agmentary front elevation of a portion of the keyboard,parts being removed to expose underlying parts, and

Fig. 4 is an enlarged fragmentary detail view of the locking devices.

Referring particularly to the drawing in which similar references referto the same parts in all the views, and in which one pos sibleembodiment of the invention is illustrated applied to a power drivenperforating machine of well known type, said machine comprises a die 1having a plurality of openings in its front side with which theperforating punches 2 cooperates to perforate a work sheet 3 arranged onthe die. The work sheet is supported 1n a paper apron 4 arranged beneaththe die and supported on a fixed part from which it is directed upwardlyover the front of the die and the openings therein to a feed roller 5having a ratchetfi fixed thereto which is engaged by devices presentlyto be described for turning the roller step by step to move the worksheet forwardly to space, the perforations produced by the puncheslongitudinally thereof.

The punches 2 are slidably mounted in guideways provided therefor in apunch guide 7 and at their forward ends are operatively connected withthe upper ends of levers 8 pivoted on a rod 9 extending across themachine and mounted on the punch guide 7. At their lower ends each ofthe levers 8 is bifurcated at 10 to provide a slot whereby it isoperativcly engaged by a laterally projecting stud 11 on a bell cranklever 12 pivoted on a rod 13 also extending across the machine. Thelever 12 has an arm 14 to which the upper end of a link 15 is pivoted,the other end of said link being pivoted to an arm 16 of a bell cranklever pivoted at 17 to the frame of the machine. The other arm 18 of thebell crank rojects downwardly from its ivot and at its end carries a cam19 revolu I mounted thereon and arranged adjacent t 0 surface of a powerdriven roller 20. The cam 19 has a reentrant rtion which normall facesthe roller and is arranged closely a jacent its surface but out ofcontact therewith, in which position the cam is maintained by astoplever 21 ivoted on the bell crank and has its lower en arran in the pathof a stop on the cam. Sai lever has an ofiset rtion 22 at its other endwhich is engaged y the bifurcated end 23 of an arm 24 on a key lever 25also pivoted on the shaft 13.

The lever 21 has two ofiset portions 21 and 21" on its lower end whichare spaced from each other, one of which, 21", is normal- 1 in the pathof the stop on the cam. When the key lever is actuated to swing thelever 21, the offset portion 21 moves from the stop and releases thecam, while the other ofi'set portion 21" moves into the path of the stopto arrest the cam, if the key lever be held depressed. When the cam isreleased, it is moved forwardly into frictional engagement with theroller 20 under the action of a springpressed finger 27 pivoted on thebell crank and engaging a lug or projection 28 on the cam. The cam 19 isrotated by its engagement with the driven roller 20 and as it rotatesswings the bell crank on its pivot 17, and the lever 12 through the link15 to actuate the lever 8 to move the unch toward the die to perforatethe sheet t ereon. A s ring 30 connects the key lever 25 with a fixepart and resiliently maintains it and the parts connected therewith innormal position, shown in Fig. 1 of the drawing, and a spring 31connects the bell crank lever 12 with a fixed part and resilientlymaintains the lever 8 in retracted position with its stop arm 32 in engament with the punch guide.

be hell crank levers 12 have rearwardly rojecting arms 33 which engage auniversal ar 34 extending across the machine and pivoted at 35 on theframe of the machine. The universal bar 34 has a rearwardly extendingarm 36 pivotally connected with one end of 1a link 37, the other end ofwhich is pivoted to an arm 38 pivotally mounted on the shaft 39 of thefeed roller 5. A pawl 40 is pivotally mounted on the arm 38 andresiliently engages the teeth of the ratchet 6 under the action of thespring 41 which connects the pawl with the arm 38. A sprin 42 isconnected with the arm 36 at one en and-has its other end anchored onthe frame of the machine and is operative to move the link 37 and turnthe arm 41 into engagement with a stop 43 secured in a fixed part of themachine. When a key 44 is operated to depress a key lever 25, the poweroperated devices are set in motion, as previously explained, to actuatethe bell crank lever 12 to operate one of the savanna Bunches 2. At thesame time, the universal ar 34 is actuated against the tension of thespring 42 and swings the arm 38 away from t e stop 43 and retracts theawl 40 over a tooth of the ratchet wheel. on the bell crank 12 returnsto normal ition under the action of the spring 31, t e punch 2 isretracted from the work piece and the universal bar is released to rmitthe sprin 42 to swing the arm 38 an with it the paw 40 to turn the feedroller and advance the work sheet.

When two perforations are formed in the master sheet by the same punchin close prox- 1m1 liab e to pass the parts designed to be operatedthereby'before the return to normal to each other, the secondperforatlon is position after actuation y the first perforation, withthe result that the second perfora-= tion fails to actuate said parts.To overcome this liability, means are provided for 199thepunchkeysdepressedwhenactuated. Sai nfeans com rises a locking bar 46extending across the rout of the ke board and having rearwardly anddownwar y extending arms 47 at its ends whereby it 1s pivoted to theframe of the machine. The upper edge of the bar 46 is bent rearwardly toform a lip adapted to engage cut-awa portions 48 formed in the frontends of the ey levers 25. A sp 49 connects the arm 47 with a fixed artan operates to maintain the lip on the locking bar resiliently engagedwith the cut-away rtions in the front of the key levers. At upper ends,the cut-awa portions are prov1 ed with upwardly an forwardly inclinedwalls 51 which are adapted to engage the lip on the locking bar when thekey lever is depressed and cam said bar forwardly againstrelease thepreviously actuated key lever and permit its spring 30 to return it tonormal position, when it may be actuated again to perforate the sheet.

As lpreviously stated, it is also desirable to lockt e adjacent keysagainst actuation when a key is depressed until the work sheet isadvanced :one or more spaces since too rapid actuationj'of adjacent typeare in a t pewritin machine in which the rfora sheet is to used is to beavoid As usual in this t e of machine, the key levers are guided at teir front ends in vertical slots 53 in a comb 52 extending across thefront of the keyboard and secured to the frame of the machine. The

slots 53 in the comb are spaced uniform dis-- tances apart,corresponding to the horizontal eir evee spacin of the key levers.Suspended on the sides the comb are looking devices 54 which swing to anormal position under the force of gravity. The locking devices 54' aresectorial 1nform, and when in the normal position pro'ect over adjacentslots 53 into the paths of e adjacent key levers, so that when one ofsaid key levers is depressed the locking devices in its path are cammedby the key levers and swung laterally thereby toward the paths of theadjacent key levers, and the descending key moves into the path of thelocking devices and retains them 111 the paths of the adjacent keylevers and prevents actuation thereof. The depressed key lever isretained in its depressed position by the locking bar 46 which is movedto release the key lever when another key or the spacing key isactuated, as previously explained.

Since the key levers are arranged as closely together as possible, theslots in the comb are also arranged very closely together, and thelockin devices are arran d alternately on opposite sides of the com sothat they are free to swing laterally in opposite directions withoutengaging the adjacent lockin devices. By this arran ement, each 0 thelocking devices normalfy lies in the paths of both of the key leversbetween whlch it is pivoted, and two adjacent locking devices onopposite sides of the comb are normally arranged to swing into and outof the path of each of the key levers. A locking member 56 is arrangedbeneath all of the key levers and locked in en agement therewith by amember control ing means whichconnects the driven roller 20 with powerdevices, such as an electric motor. When the driven roller is silenced,the key levers are locked against actuation.

Although only one embodiment of the invention is shown and describedherein, it will be understood that this application is intended to coversuch chan es or modifications as come within the s int of the inventionor see c of the followmg claims.

claim:

1. In a perforatin machine, the combination of a die, means %or feedinga work sheet thereover, punches coo rating with the die to perforate thework s eet, key levers operatively connected with said punches, meansoperatively connected with said key levers for actuating the sheetfeeding means to space the rforatlons in the work sheet, means forretaining any of said key levers depressed when operated to actuate apunch, locking devices arranged in the path of one of said key leversand movable into the path of adjacent key levers when said key lever isdepressed for locking said adjacent key levers in normal position whileother key levers are free to be operated, and means on another of saidkey levers for releasing said retaining means retaining any of said keylevers depressed when operated to actuate a unch a air of lockingdevices arranged in t e path 0 one of said key levers and movable inopposite directions therefrom when said key ever is depressed to lockimmediately adjacent key evers against actuation while the first keylever is depressed and other key levers are free to be operated, andmeans on another of said key levers for releasing said retaining 'means.

3. In a rforat-ing machine, the combination-of a re, means for feeding awork sheet thereover, punches coo crating with the die to perforate thework s eet, key levers operatively connected with said punches, meansoperativel connected with said key levers for actuatm the sheet feedinmeans to space the rforatlons in the work s eet, means for retaining anyof said key levers depressed when operated to actuate a punch, a slottedguide comb in which said key levers are guided, independently operablelocking devices pivoted on said comb between adjacent slots and movableby gravity to a normal 0- sition projected into the paths'of adjacent eylevers, cams on said locking devices adapted to be engaged by one ofsaid ke levers when depressedto move the locking devices in oppositedirections from its path and engaged y the key. lever when so depressedforretaining the locking devices out of its path and in the paths of theimmediately adjacent key levers to lock the latter against actuation,and means for releasing said retaining means when another key isdepressed to operate the sheet feeding means.

.4. In a erforating machine, the combination of a ie, means for feedinga work sheet thereover, punches cooperating with the die to perforatethe work sheet, key levers operatively connected with said punches,means operatively connected with said key levers for actuating the sheetfeeding means to space the perforatlons in the work sheet, means forretaining any of said key levers depressed when operated to actuate apunch, a slotted guide comb in which said ke levers are guided, lockingdevices pivote alternately on opposite sides of said guide comb betweenthe slots and projecting into the paths of the adjacent key levers, camson said locking devices adapted to be engaged by said key levers whendepressed to move a locking device on each side of said comb from itspath and engaged by the key lever when so depressed for retaining thelocking devices out of its path and in the paths of the immediatelyadjacent key levers to lock the latter against actuation, and means-forreleasing said mtaming means when another key is depressed to operatethe sheet feeding means.

5. In a rforatin machine, the combination of a 3, means or feeding awork sheet thereover, punches cooperating with the die to perforate thework sheet, key levers operatively connected with said punches, meansoperatively connected with said key levers for actuating the sheetfeedin means to space the perforations in the wor sheet, means forcompelling the depression of a key to feed the work sheet betweensuccessive alternate depressions of keys immediately ad'acent eachother, said means comprising a s otted comb in which the key levers areguided, locking devices on said comb between adjacent slots andprojecting into the aths of the adjacent key levers and movab e out ofthe path of one of said ke levers when depressed and retained there y inthe path of adjacent key levers to lock said adjacent key levers againstactuation, retaining means for locking the key in depressed position,and

evers for remeans on anot er of said key leasirig said retaining means.

6. n a rforatin machine, the combina- 33 tion of a ie, means or feedinga work sheet thereover, punches coo rating with the die to perforate thework 5 eet, key levers operatively connected with said punches, meansoperatively connected with said key levers for actuating the sheetfeedin means to space the rforations in the wor sheet, means forretaining any of said key levers depressed when operated to actuate apunch, a slotted comb in which said ke levers are guided lockin devicesmovabl mounted on sai comb tween adjacent ey levers and projecting intothe aths of sad key levers, cams on said locking evices ada ted to beengaged bly said key levers when epressed to move t e adjacentlockinfilgevices from their path and retain said 100 devices in thepaths of the immediately ad acent key levers while depressed to locksaid adjacent key levers against actuation, and means for releasing saidretaining means when another key is depressed to operate the sheetfeeding means.

7. Ina rforatin machine, the combination of a 1e, means or feeding awork sheet thereover, punches coo rating with the die to perforate thework s eet, key levers operatively connected with said punches, meansoperatively connected with each of said key levers for actuating thesheet feeding means to space the perforations in the work sheet, meansfor compelling the depression of a key lever to feed the work sheetbetween successive depressions of the same key and successive alternatedepressions of immediately adacent keys, said means comprising a deviceI for retaining any of said key levers depressed eeann when operated toactuate a punch, independently o rable locking devices in the paths ofsaid e levers and movable from the path of a ke ever when depressed andretained by said ey lever in the paths of the ately adjacent key leversto lock them against actuation while said key lever is depremed, meanson another of said ke levers for releas- I ing said retaining device wen any one is actuated to perforate and space the work sheet, 76' and aspace key for releasing said retaini? device and spacing the work sheetindepen ently of the perforati devices.

In witness whereof, have hereunto sign my name. 8b

CHESTER W. GRUMRINE.

